# math

### Equation of scaler potential problem

1. The problem statement, all variables and given/known data [ATTACH] 2. Relevant equations Equations of Lienard Wiechert Potential 3. The...
Thread by: tomalku, Mar 21, 2018 at 11:41 AM, 1 replies, in forum: Introductory Physics Homework

### Other Is repeating a year a bad idea?

I am a physics freshman in Europe where we have 3 year undergrad programmes. I am just over the first year of Multiple Sclerosis and just when the...
Thread by: Andraz Cepic, Mar 18, 2018 at 9:24 AM, 3 replies, in forum: Academic Guidance

### Looking for tricky and interesting physics and maths questions

I want to do tricky physics and maths questions that require only A-level knowledge of maths and physics to solve. Questions that don't have a...
Thread by: Seneka, Mar 11, 2018, 4 replies, in forum: Academic Guidance

### B Calculate probability of getting 2 red balls

Hi, I'm struggling with a basic probability question and I need some insight into this problem. I can solve the problem, but its a really...
Thread by: beamthegreat, Mar 2, 2018, 7 replies, in forum: General Math

### I What does the vertical line in this equation mean?

Hey, What does the vertical line with the "I_b" on the bottom right mean? Link here: https://imgur.com/a/nII9g Thanks, -Yael
Thread by: APUGYael, Feb 28, 2018, 4 replies, in forum: General Math

### Prove that 0.999... = 1 is a contradiction

1. The problem statement, all variables and given/known data Prove that 0.999... = 1 is a contradiction 2. Relevant equations None 3. The...
Thread by: mustang19, Feb 11, 2018, 15 replies, in forum: Precalculus Mathematics Homework

### Math modelling diffrential equation question?

So there's this question I've to do. I got through until a certain point and now I'm stuck. >-> 1&2The question: The rate of deterioration of a...
Thread by: Eveflutter, Feb 3, 2018, 2 replies, in forum: Calculus and Beyond Homework

### Courses What courses of the following are the best for my field?

Hello PF, I am a physics junior and I lately decided on a math double major. I found the topics and classes and interesting enough to do so. Now...
Thread by: jamalkoiyess, Jan 18, 2018, 1 replies, in forum: Academic Guidance

### Commutation relation

hi, do the translation operator commute with parity operator?
Thread by: fatema, Jan 18, 2018, 4 replies, in forum: Quantum Physics

### Should I Pursue a Double Major in Math and Physics?

Hello everyone, I am currently attending a community college and at the end of spring, I will graduate with associates in mathematics and physics...
Thread by: Alec Hewitt, Jan 15, 2018, 5 replies, in forum: Academic Guidance

### Can you help me to find the solution of logarithm equation

1. The problem statement, all variables and given/known data $$\log_2 \sqrt{2x-1} < \log_4 x$$ 2. Relevant equations 3. The attempt at a...
Thread by: Helly123, Jan 6, 2018, 6 replies, in forum: Precalculus Mathematics Homework

### How to solve this trigonometric equation?

1. The problem statement, all variables and given/known data cos2x + cos x = 0 (0 <= x <= 360) 2. Relevant equations 3. The attempt at a...
Thread by: Helly123, Jan 6, 2018, 12 replies, in forum: Precalculus Mathematics Homework

### LaTeX You can't use \eqno' in math mode.

Hi, this message "You can't use \eqno' in math mode." appears frequently in a sharelatex document I am working on. How can it be fixed? Thanks!
Thread by: SeM, Jan 5, 2018, 2 replies, in forum: Math Software and LaTeX

### Admissions Should I study physics if I didn't do well in HS maths?

In my final year of high school (2017) I finished with a mark of 74/100 for advanced maths (NSW, Australia. It's a calculus-based course and...
Thread by: ScienceGuy42, Jan 4, 2018, 13 replies, in forum: Academic Guidance

### Testing How significant are math contests / competitions?

Confession: I'm creating this thread because I'm a little disappointed in some contest results I just received. That said, hopefully it leads to...
Thread by: PetSounds, Dec 15, 2017, 2 replies, in forum: Academic Guidance

### B What is the converse statement of the given sentence?

The sentence is : "For all real numbers there exists a natural number that is smaller". That is (∀x∈R)(∃n∈N)n>x. This is what I thought of: we can...
Thread by: Danijel, Dec 13, 2017, 17 replies, in forum: General Math

### B Is there a particular symbol in Math for inexisting limits?

Hi, I was looking for a symbol in math that is commonly applied when a limit to a function does not exist. Is there such a symbol? I could not...
Thread by: SeM, Dec 12, 2017, 2 replies, in forum: General Math

### B What are multiplication and division?

Hey, I have often times wondered what is multiplication? Repeated addition is OK but for some reason it doesn't satisfy me. For example: 2*2cm is...
Thread by: Ashish Shukla, Dec 7, 2017, 16 replies, in forum: General Math